<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
    <script src="vue.js"></script>
<body>
    <div id="demo">
    <input type="text" v-model.lazy="message" placeholder="请输入数据">
        <button v-on:click="ClickToAdd">点击添加数据</button>
        <ul>
            <li v-for="(item,index) in good" :key = index>
                {{item}}
            </li>
        </ul>
    </div>
    

<script>
     var demo = new Vue({
        el:'#demo',
        data:{
                message:'',
                good:[]
            },

        methods:{
            ClickToAdd(){
                this.good.push(this.message)
                    this.message = ''
            }
        }
    
    
    })
</script>
</body>
</html>